A major effect of long-term weightlessness involves the loss of bone and muscle mass. Without the effects of gravity, skeletal muscle is no longer required to maintain posture and the muscle groups used in moving around in a weightless environment differ from those required in terrestrial locomotion.
Marina /ma-ri-na/ [3 sylls.] as a girls' name is pronounced mah-REE-nah. It is of Latin origin, and the meaning of Marina is from the sea. From marine. A saint's name. Shakespeare gave the name to Pericles' daughter in his play Pericles, Prince of Tyre.
During her baptism she took on the name Marina and through her actions, earned the title of Dona, or 'Lady' from Cortes and his men. Cortes trusted completely in her translations and counsel, and she traveled across Mexico by his side, not only as an advisor but later as his lover.